##parameters=include_root=1
##title=Return breadcrumbs
##
from string import join

result = []
portal_url = context.portal_url()

if include_root:
	result.append( { 'id'	   : 'root'
				   , 'title'   : context.portal_properties.title()
				   , 'url'	   : portal_url
				   }
				 )

relative = context.portal_url.getRelativeContentPath( context )
portal = context.portal_url.getPortalObject()
checkPermission = context.portal_membership.checkPermission
from Products.CMFCore.permissions import View

for i in range( len( relative ) ):
	now = relative[ :i+1 ]
	obj = portal.restrictedTraverse( now )
	if not now[ -1 ] == 'talkback':
		result.append( { 'id'	   : now[ -1 ]
					   , 'title'   : obj.title_or_id()
					   , 'url'	   : checkPermission(View, obj) and (portal_url + '/' + join( now, '/' )) or None
					   }
					)

return result